The capsule that helps keep blood sugar steady after a meal, supports circulation and takes the edge off the afternoon slump.
Eleven actives in a single capsule: chromium for blood glucose, magnesium and vitamin C for tiredness, seven 4:1 plant extracts. One capsule a day, taken before your heaviest meal.
4.5 out of 5 from 211 reviews
The product in plain terms
Cardionix is a food supplement in capsule form, built around sugar metabolism. Each capsule brings together four micronutrients (vitamin C, vitamin D, magnesium and chromium picolinate) and seven plant extracts concentrated at a 4:1 ratio: turmeric, cacao, gymnema, cinnamon, bitter melon, banaba and butcher's broom.
What the product does comes down to three lines. Chromium contributes to the maintenance of normal blood glucose levels and to normal macronutrient metabolism. Magnesium and vitamin C contribute to the reduction of tiredness and fatigue. The seven plant extracts round out the formula on the digestive and circulatory side.
This is not a medicine. Cardionix is not intended to treat any illness and replaces neither prescribed medication nor a balanced diet: it sits alongside them, it corrects nothing.
What it does, precisely
Four effects, each tied to a named active and to its amount. No vague promises: this is what the formula can genuinely support.
This is the best established effect in the formula. Chromium picolinate, at 1.2 mg per capsule, contributes to the maintenance of normal blood glucose levels. In practice, it helps the body make better use of the sugar arriving in the blood just after a meal rather than letting it sit there.
Vitamin C (90 mg) and magnesium both contribute to the reduction of tiredness and fatigue. Taken daily, it is the mid-afternoon dip that softens first: the one that follows a heavy lunch and has you reaching for something sweet around 4pm.
Butcher's broom has long been used for circulatory comfort, and in particular for the heavy legs felt at the end of the day. Cacao and turmeric, the two most heavily dosed extracts in the formula, bring their polyphenols to the same job.
Chromium contributes to normal macronutrient metabolism, meaning sugars, fats and proteins. Magnesium, for its part, contributes to normal energy-yielding metabolism. What you eat is turned into usable energy more efficiently.
The logic of the formula
The eleven actives do not pull in every direction at once. They sit on two axes, and the timing of the dose follows directly from the first.
A meal sends a wave of glucose into the blood. Chromium helps keep blood glucose levels normal, while gymnema, cinnamon, bitter melon and banaba, all traditionally used alongside sugar metabolism, fill out the effect. That is exactly why the capsule is taken 15 to 30 minutes before you sit down to eat: the actives are in place when the wave arrives, not an hour later.
The second side covers what circulates and what tires. Butcher's broom is aimed at vein comfort and the heavy-leg feeling. Turmeric and cacao, the two most heavily dosed extracts, bring their polyphenols. Behind them, vitamin C, vitamin D and magnesium cover tiredness and energy metabolism, so the effect is felt across the day and not only on digestion.
Active by active
Six actives are worth a word of explanation. The table below then lists all eleven, with the exact amount in each capsule.
Chromium picolinate
1.2 mgThe only active in the formula carrying an authorised health claim on the GB register: it contributes to the maintenance of normal blood glucose levels and to normal macronutrient metabolism. It is the pivot of the product.
Gymnema sylvestre
50 mg, 4:1A climbing plant from India and a mainstay of Ayurvedic practice. Its leaves have one well known quirk: chewed, they briefly dull the perception of sweetness on the tongue.
Cinnamon bark
50 mg, 4:1The most studied spice in the blood sugar field. It appears here as a bark extract concentrated four times over, not as the ground cinnamon from the kitchen cupboard.
Curcuma longa
200 mg, 4:1The most heavily dosed active in Cardionix. Its curcumin is one of the best documented plant polyphenols, usually associated with digestive and joint comfort.
Butcher's broom
5 mg, 4:1Ruscus aculeatus is the reference plant for circulatory comfort. It is the only active in the formula pointed at venous return and the heavy-leg feeling.
Magnesium and vitamin C
20 mg, 90 mgThe anti-fatigue pair in the formula. Both contribute to the reduction of tiredness and fatigue and to normal energy-yielding metabolism. They carry the part of the effect you notice across the day.
| Active | Amount |
|---|---|
| Vitamin C (ascorbic acid) | 90 mg |
| Vitamin D | 10 µg |
| Magnesium oxide | 20 mg |
| Chromium picolinate | 1.2 mg |
| Curcuma longa extract 4:1 | 200 mg |
| Theobroma cacao extract 4:1 | 100 mg |
| Gymnema sylvestre extract 4:1 | 50 mg |
| Cinnamon bark extract 4:1 | 50 mg |
| Momordica charantia extract 4:1 | 5 mg |
| Lagerstroemia speciosa extract 4:1 | 5 mg |
| Ruscus aculeatus extract 4:1 | 5 mg |
| Total actives | 526.2 mg |
The 4:1 marking means an extract concentrated four times over: four kilos of dried plant give one kilo of extract. The full ingredient list, excipients included, is printed on the packaging of the product delivered to you.
The daily habit
One capsule a day, not two. It is taken 15 to 30 minutes before the main meal of the day, the heaviest one. Swallow it whole with a large glass of water.
If capsules are awkward for you, this one opens: tip the contents into half a glass of water and drink straight away. The taste is blunt, with turmeric well to the fore.
The bottle holds 30 capsules, a full month. A food supplement is judged over time rather than over three days: allow at least one complete month before taking stock.
Pick your meal
Work out which of your meals is the heaviest. For most people that is lunch or dinner. Then stay with the same meal from one day to the next.
Take the capsule around twenty minutes beforehand
That is the time the actives need to be in place when the sugar from the meal reaches the blood. Any later and the point of the dose is lost.
Swallow with a large glass of water
A 250 ml glass is enough. If swallowing is difficult, open the capsule, stir the powder into a little cold water and drink without waiting.
Keep it up for a month
One bottle covers 30 days. Take the capsule at a set time: with a food supplement, consistency counts for more than the dose.
Do not exceed the recommended daily dose. That means one capsule. Food supplements should not be used as a substitute for a varied and balanced diet and a healthy lifestyle. Cardionix does not replace medical treatment either.
Not recommended for pregnant or breastfeeding women, or for anyone under 18. If you are on medication, in particular for diabetes or blood thinning, ask your GP or pharmacist before the first capsule: cinnamon, gymnema and turmeric can interact. Keep out of reach of young children, and store in a dry place away from light.
What sets the product apart
No proprietary blend, no amount hidden behind a trade name. All eleven actives are listed with their exact weight per capsule, which lets you compare line by line with anything else on the shelf.
A 4:1 ratio means that four kilos of dried plant give one kilo of extract. Weight for stated weight, the extract therefore carries considerably more active matter than the raw plant powder used in entry-level formulas.
Magnesium and vitamin C are not there to pad out the label. Both contribute to the reduction of tiredness and fatigue and to normal energy-yielding metabolism: that is the side you notice day to day, on top of the slower work on blood sugar.
One capsule a day, one bottle covering the whole month. It is the simplest format to stay with without thinking about it, and with a food supplement, consistency is what makes the difference.
Buyer feedback
Average rating of 4.5 out of 5 from 211 published reviews. These accounts describe individual experiences and are not a promise of results.
★★★★★
I have taken one capsule before lunch for six weeks now. What has shifted for me is the afternoon: I am no longer hunting for a biscuit at four o'clock. The bottle is small enough to live in my bag.
Hannah W.Manchester, six weeks in
★★★★★
I was wary of the capsule size, but these go down easily with a glass of water. I also liked seeing the amounts written out in full, which is rarer than you would think on this shelf.
Graham P.Bristol, one bottle finished
★★★★☆
Three weeks in. I feel less heavy after lunch and less inclined to pick at things in the evening. One star off because the delivery took eight days to reach me.
Priya S.Leeds, three weeks in
★★★★★
My GP confirmed there was nothing in it that clashed with what I already take, so I could start with a clear head. One capsule before dinner is easy enough to remember.
Douglas F.Glasgow, two months in
★★★★★
What I like is not juggling three different tubs every morning. It is all in the one capsule, so I actually remember to take it.
Eleanor H.Norwich, five weeks in
★★★★☆
Onto my second bottle. I take it before dinner, which is my biggest meal. Nothing dramatic, but I feel steadier in the evening and less drawn to the cupboard in front of the television.
Martin C.Sheffield, two bottles
The questions we get
Thirty capsules, one a day, so a full month of use. The dose is one capsule daily and it should not be exceeded.
Fifteen to thirty minutes before the main meal, the heaviest one. Lunch or dinner depending on your habits, but keep to the same meal from one day to the next: consistency counts for more than the exact hour.
Yes. If you find capsules hard to swallow, open it, tip the powder into half a glass of cold water and drink straight away. The taste is strong, with turmeric clearly dominant.
A food supplement is judged over a complete course, a month at the very least. The effects build gradually and vary from one person to the next depending on diet and lifestyle. Three days of use tells you nothing.
The formula is plant-based and the bottle carries the wording Premium Plant-Based Formula. If you are strictly vegan, check the nature of the capsule shell on the packaging you receive.
The product is not recommended for pregnant or breastfeeding women, or for anyone under 18. If you take medication for diabetes or blood thinning, speak to your GP before starting: cinnamon, gymnema and turmeric can interact with those medicines.
No, under no circumstances. It is a food supplement, not a medicine. It is not intended to diagnose, treat or prevent any disease, and it replaces neither a balanced diet nor a prescription you are already on.
The order is completed with the partner seller, who takes the payment, packs the parcel, handles tracking and looks after aftersales. Delivery times, postage and returns are those shown on their order page.
One bottle covers thirty days. That is the shortest run on which a food supplement can honestly be judged.
Order CardionixWho publishes this site
cardionix.co.uk is an independent information site devoted to the Cardionix product. We do not manufacture it, we do not sell it, and we handle neither dispatch nor aftersales.
How this site is funded
The order button leads to the partner seller. If a purchase follows that click, this site may earn a commission. It makes no difference at all to the price the buyer pays.
Images and testimonials
The photographs come from the manufacturer and are shown for illustration. The published reviews report individual experiences: they are neither proof of efficacy nor a promise of results.
Before your first capsule
Cardionix is a food supplement. Food supplements should not be used as a substitute for a varied and balanced diet and a healthy lifestyle. It does not replace medical treatment. If in doubt, ask your GP or pharmacist.
